Means for the prevention of racing of marine engines.



11. 1711111311. MEANS FOR THE PREVENTION OF RACING 0F MARINE ENGINES.

u f V APPLIUATION FILED 111111: 1, 1911. 1,038,460, Patented Sept. 10,1912,

2 SHEETS-SHEET 1.

lfzz'eafan F. TANNER. MEANS FOR THE PREVENTION OF mama or MARINE ENGINES.

APPLXOATION FILED JUNE 1,1911. I

Patented Sept. 10, 1912.

2 SHEETS-SHEET 2.

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MEANS FOR THE PREVENTION OF RACING OF MARINE ENGINES.

Specification of Letters Patent.

Patented Sept: 10,19122.

Application filed June 1, 1911. Serial No. 630,653.

To a whom it may concern:

Be it known that l, FELIX TANNER, a subject of the King of Great Britain, residing at the Hotel Arcadia, Pitt street, Sydney, in the State of New South Wales, Commonwealth of Australia, have invented certain new and useful Improvements in Means for the Prevention of Racing of Marine Engines, of which the following'is a specification.

This invention relates to improvements in means for the prevention of racing of marine engines due to pitching of the vessel, my object being to provide reliable and inexpensive apparatus for that purpose.

' According to my invention in a suitable position on the vessel a beam is pivoted so that in its normal position it is approximately parallel with the actual load line. On one arm of the beam is an adjustable weight for regulating purposes, and on the opposite arm are one or more depending contact pieces which are capable of taking into one or more cups or receptacles containing mercury to make contact therewith and energize a solenoid. The beam has a second adjustable weight below its pivot to maintain it as near as practicable to the horizontal position when the vessel is pitching. The solenoid has its plunger or rodextended and on the extension a link is pivoted the other end being secured to a'levcr controlling the spindle of the throttle valve. The efiect of this is that on the vessel pitdhing the contact piece/ or pieces on the beam make electrical contact with the mercury and cause the solenoid to be energized attracting its rod and thereby actuating the link to close the throttle valve. Instead of transmitting the movement of the rod. to the spindle by a. link I may employ othermeans such as a. rack and pinion. The rod is provided with a suitable spring so that immediately the contact piece or pieces on the beam break contact with the mercury the rod is retracted to its normal position and the throttle valve opened. But

in order that my invention may be clearly. understood, I now refer to the drawings;

herewith, in which Fignre 1 is a View in perspective of the apparatus. Fig. 2 is .a'sectional elevation of the solenoid while, Figs. 3 and 4 are two diagrammatic views showing the off and on position of the apparatus.

The same reference numerals indicate the same or corres onding parts.

6 is a boar suitable partition-in the ship.

8 is a pivoted beam having on one end the adjustable weight 9 and on the other the contact pieces 10 and 11 which are insulated or plate pivoted at 7 to a from the beam by a strip of rubber or the like.

12 represents aweight also adjustable situ ated below the pivot of the beam 8 on a downward extension of said beam.

13 and 14 represent two receptacles" of glass or the like containing mercury secured by a bracket to the board 6 and into which receptacles the contacts 10 and 11 respectively are capable of entering to make electrical contact with the mercury therein.

15 is a slot in the board and 16 is a butterfly or other nut for adjusting the position of the board on the pivot 7 relatively to the vessel. 1

17 represents a solenoid having a rod 18' and extension thereof 19. 20 is a spring tending to draw said rod up to its normal position.

21 is a link pivoted to the end of the extension 18 and secured also to a lever controlling the spindle 22 it" the throttle valve.

23 is a dynamo and 24 wire from dynamo to solenoid and 25 wire from solenoid to mercury cup 14. i

26 is the return wire from the receptacle 13 to the dynamo:

It will be evident that on the vessel pitching head down the beam will remain practically in the same horizontal line but the mercury vessels 13 and 14 will rise with the vessel permitting the mercury to contact with the pieces 10 and 11. On contact taking place the solenoid 17 will be energized to attract its rod 18 and thereby actuate the link 21 to operate the valve spindle 22 through a suitable lever. As soon the vessel rises to the horizontal or normal position the contacts will be broken thereby cutting oil the current from the solenoid and allowing the spring to draw up' the rod 18 and throw the valve spindle to the on position;

if be a magnst or magnis may be fixed an. 0?: ad acent t0 $119 com-ask pmces 13 21350 place 053 on the tap m: the same purpose. Having thus dssribeci my im'miian What 1 chain as 11m; and, iesira to proifist 33* Let- Lers Paiant isz-- Means for praventing racing of marine enginem, amnpiising a plate pivota ily meanted feradjustment in the direction 0f the longitudinal plana 01 the vessel, a beam piv atafiy meunted on the plane and adapted 0 occupy a manual horizontal pasition in file luugituiiml plam 055 the Y 1 the beam being provied 21$ one ihsreof with can tact means, and "-t the ether end thereof with axis Weighting ezsaansinn, the beam se of eliminating EBXCQSSH'Q 11% having a Weighted extensiml pmjccting :"'I1W="d from is pivotai cmmection, relmam} Contact means nwunt sd mi the a far coi pera'cion with cantast means we a ain the plate, the beam, and the rslativei fixed coniact means being assembled as unit, an eiectric circuit lnclhzding the fixvc'i contact means, a throttle waive, and a selcmaid. included in said circuit and 1nechanicafly connected to (he hrottle valve.

in testimony wherccrf i have hereunto set my hand in yresence 01"- two subscribing wit- FELIX TANNER. 

